CN101407200B - Vehicle rollover prediction with occupant restraint system activation - Google Patents
Vehicle rollover prediction with occupant restraint system activation Download PDFInfo
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- CN101407200B CN101407200B CN2008101696950A CN200810169695A CN101407200B CN 101407200 B CN101407200 B CN 101407200B CN 2008101696950 A CN2008101696950 A CN 2008101696950A CN 200810169695 A CN200810169695 A CN 200810169695A CN 101407200 B CN101407200 B CN 101407200B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0018—Roll-over
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R2021/01325—Vertical acceleration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R2021/01327—Angular velocity or angular acceleration
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Abstract
An automobile rollover prediction and restraint device deployment system comprises a plurality of automobile data sensors to generate a plurality of data signals, and a controller to receive the data signals and configured to deploy resettable and non-resettable restraint devices. The controller is configured to activate at least one resettable restraint device when one or more of the data signals exceed a first threshold, indicating that the vehicle is in a position or undergoing movement that indicates a potential for vehicle rollover, and to de-activate the at least one resettable restraint device when one or more of the data signals fall below the first threshold.
Description
Technical field
The present invention relates to event detection and occupant restraint system activation in the self-propelled vehicle, be specifically related to allow earlier and accurately activate the rollover prediction and the method for inspection that can reset passenger restraint system and these passenger restraint systems are resetted.
Background technology
Develop various rollover method of inspections and be used to activate passenger restraint system, like air bag, side curtain airbag, tumble protection side gas curtain system (safety canopy), seat safety pretension device, and Pop-up stabilizer rod (pop-up rollbar).Majority method relates to angle of roll and inclination speed or the various component of acceleration with the sensor monitoring vehicle that is fit to, and the execution route control algorithm is to dispose specific passenger restraint system and when detecting actual rollover, to dispose additional passenger restraint system in the time possibly turning on one's side.
The seatbelt pretension can remain on the position that helps disposing the inflatable restraint device more with automotive occupant, from but favourable.Existing method is the morning and the rollover that calculate to a nicety as far as possible as far as possible.Therefore, disposing the inflatable restraint device, like air bag, side curtain airbag, or before the protection side gas curtain system that tumbles, the seatbelt pretension that possibly carry out can not reach optimum degree.
Some rollover researchs show, vehicle before rollover, can experience various degree driftage and sideslip (as, during lateral slip (skidding)).The vehicle sport is created in the power that crash influences occupant's kinematics character (kinematics) before before such bump, and this might make the occupant get into unfavorable position concerning inflatable restraint spare is disposed.For example, when vehicle began for example towards the driver side inclination, the lower torso of chaufeur was left seat while upper torso sidesway usually up to contacting with left front door internal decoration plate.The head of chaufeur continues sidesway up to contacting with left front wind glass.Such motion occurs in the 100ms.If vehicle is transformed into freely (free-flightrotation) stage of trackslipping; Then the head of chaufeur and trunk are towards the inside translation of top trim panel of occupant side and vehicle; And, contact with the top trim panel of vehicle up to head with respect to its initial position continuation perpendicular movement.During possible follow-up ground contact phase, when the trunk of chaufeur during towards the top trim panel motion of vehicle, the head of chaufeur can keep contacting with the top trim panel of vehicle, and this possibly cause the neck pressurized.
In such rollover, in when beginning, when front-seat seat occupant upper torso and head towards the chaufeur sidesway and when leaving seatbelt D and encircling, front-row seats occupant's lower torso is left seat usually.Seatbelt possibly slide from occupant's shoulder, and the occupant continues sidesway then.If vehicle is transformed into freely and trackslips the stage, then occupant's the reversing of motion and right car door of court and vehicle window translation similarly contact with right car door up to upper torso.The occupant possibly continue translation by trim panel towards top, arrives the position near wind glass, B post and purline junction up to its head.During possible follow-up ground contact phase, the quick deceleration of vehicle can make the top trim panel motion of occupant's trunk towards vehicle, and this possibly cause the neck pressurized.
If dispose the inflatable restraint device, early can reduce off normal (out-of-position, OOP) injury that above-mentioned occupant's kinematics character causes with accurate seatbelt pretension.In order to realize that such injury reduces, should before the vehicle roll incipient stage, activate pre-tightening apparatus.Therefore, the possibility of the beginning or the inclination of inclination is predicted in this requirement earlier.
Existing vehicle restraint devices comprises the three-point seat belt system of standard, and the combination of limit power taking-up device of electronic limit power taking-up device or routine that pyrotechnic machinery preloader (buckle-mounted pyro-mechanical pretensioner) and the motor driven of snap close are installed.When activating, the taking-up device of motor driven uses electro-motor spin safe spool of tape and applies tension force to belt system.Then can be for example during possible rollover, the pyrotechnic machinery preloader that snap close is installed through activation applies additional tension force to seat belt system.Generally speaking, compare with the pyrotechnic machinery preloader that snap close is installed, it is much little as also to continue the long periods that the power that the taking-up device of motor driven applies to belt system is wanted.
The protection side of tumbling gas curtain system uses side curtain airbag protection automotive occupant under some side impacts and rollover situation.The protection side gas curtain system that tumbles can dispose from the sheet metal purline top between A post between A post on the double cab vehicle and the C post and on three row's seat vehicles and the D post, so that cover the sidepiece glassy zone to protect the occupant on the outer seating position.The charging blower of air bag can be near the purline between the lateral column.The protection side gas curtain system that tumbles can keep inflating and reaches the injury of long period to help to prevent that multiple impact or rollover from producing.
Except increasing driver safety property, also hope to consider customer satisfaction.Even if automotive occupant temporarily is not limited on its seat can not take place the time at bump or rollover at once, the customer satisfaction meeting reduces.In addition, if client has at bump or turns on one's side and do not change the security constraint spare that can not reset when taking place, customer satisfaction also can reduce.Dispose the existing method of occupant restrain system and fail to make the restraint device that to reset, be utilized effectively and reset like seat safety pretension device and taking-up device.
Summary of the invention
One or more during the present invention can address the above problem.It is obvious that other characteristics of the present invention and/or advantage will become through following explanation.
Some embodiments of the present invention provide a kind of be used to predict vehicle rollover and the method that activates occupant restrain system.This method comprises: reception is used for early detecting one or more the have vehicle location of rollover possibility and the incoming signals of vehicle movement; Based on some incoming signals determine when reach first the rollover last stage threshold value; At least activate first restraint device that can reset during threshold value reaching for the first rollover last stage; Based on some incoming signals determine when reach second the rollover last stage threshold value; When reaching the second rollover last stage threshold value, activate another restraint device that can reset at least; Based on some incoming signals determine when reach first the rollover phase threshold; At least activate first restraint device that can not reset during phase threshold reaching first rollover; Based on some incoming signals determine when reach second the rollover phase threshold; Reach and when reaching the second rollover phase threshold, activate another restraint device that can not reset at least.
Some embodiments of the present invention provide a kind of one or more methods that the vehicle location and the vehicle movement of rollover possibility arranged and activate occupant restrain system that are used to detect.This method comprises: reception is used for early detecting one or more the have vehicle location of rollover possibility and the incoming signals of vehicle movement; Confirm before the indication vehicle rollover, whether to reach at least three threshold values based on some incoming signals; Activate restraint device at least when reaching each in reaching three threshold values and be not suitable for the position that the inflatable restraint device is disposed to avoid automotive occupant in vehicle, to move to.
Some embodiments of the present invention provide vehicle rollover prediction and restraint device deployment system; This system comprises: produce a plurality of vehicle data sensors of a plurality of data-signals, and receive data-signal and be configured to dispose the controller of the restraint device and the restraint device that can not reset of can resetting.This controller is configured to surpass first threshold at one or more data-signals; The indication vehicle is in the position that the rollover possibility is arranged or when the motion of rollover possibility is arranged, activates the restraint device that can reset at least, and at least one restraint device that can reset of when one or more data-signals are lower than first threshold, stopping using.
In the explanation below, it is obvious that particular aspects and embodiment will become.Should be understood that the present invention can not have the one or more characteristics among these aspects and the embodiment by its most wide in range meaning enforcement.Should be understood that these aspects and embodiment only are exemplary and indicative, and do not limit the present invention.
With reference to the detailed description of the accompanying drawing couple embodiment consistent, require the feature and advantage of the theme of protection will become obvious through hereinafter with it.
Description of drawings
Fig. 1 illustrates the vehicle of the example embodiment of using instruction of the present invention;
Fig. 2 illustrates according to the rollover possibility of instruction of the present invention or deterministic four-stage;
Fig. 3 illustrates according to instruction of the present invention to use incoming signal to confirm the form of each rollover last stage and the example embodiment in rollover stage;
Fig. 4 illustrate according to before the rollover of the example embodiment of instruction of the present invention with the scheme drawing of the algorithm of rollover prediction and occupant restrain system deployment;
Fig. 5 illustrates the example of confirming the rollover last stage 1 according to the example embodiment of instruction of the present invention;
Fig. 6 A and 6B illustrate the example of confirming the rollover last stage 2 according to the example embodiment of instruction of the present invention;
Fig. 7 A and 7B illustrate the example of confirming the rollover stage 1 according to the example embodiment of instruction of the present invention; And
Fig. 8 illustrates the example of confirming the rollover stage 2 according to the example embodiment of instruction of the present invention.
The specific embodiment
Though following detailed description reference example embodiment, example embodiment a lot of substitute, modification and variant it will be apparent to those skilled in the art that.The theme of therefore, answering broad sense to treat to ask for protection.
Refer now to various embodiment, its example is shown in the drawings.Yet these various example embodiment do not limit content of the present invention.On the contrary, content of the present invention should cover various alternative, the modification and of equal value of example embodiment.
Make the occupant because vehicle movement and dynamically detect before the specific bump motion during outflow location and activate specific restraint device before the bump according to the various example embodiment expection situation of being included in of instruction of the present invention.For example, the locking of pretension or seatbelt can be disposed district's maintenance occupant position with respect to for example gas curtain when the vehicle lateral slip begins.Such restraint device activates and can make the inflatable restraint device more effective when activating.
In addition, the expection of various example embodiment comprises the condition of stumbling prediction lateral slip and/or resistance (tripping) taking place, and predicts that particularly its level possibly make the lateral slip of vehicle rollover and/or the condition that resistance is stumbled and taken place.For example, the assessment of the energy forward of vehicle can be used for predicting the rollover incident, because energy can convert lateral energy under given conditions forward.
Before understanding bump, move to the influence of automotive occupant, vehicle movement causes the possibility of rollover before the specific bump, or other sights that cause inflatable restraint spare to dispose, and can more early and activate restraint device more accurately.For example, lighter impact can not trigger security constraint spare, but possibly force the occupant to off normal and cause other actions that need to activate and dispose attaching means.Through understanding vehicle movement, follow the tracks of vehicle movement and can allow restraint device earlier and better automotive occupant to be remained on the desired locations that helps the deployment of inflatable restraint device the influence of automotive occupant and the possibility of vehicle generation rollover or bump.
Various example embodiment are provided for predicting vehicle rollover incident and the method and system of disposing occupant restrain system.Some embodiments of the present invention can be used for prediction or confirm whether rollover or crash will take place or take place at various types of vehicles.Some embodiment can use and with given deterministic forecast (or detect) rollover incident the time, dispose and/or reset, or activate and the algorithm of one or more occupant restrain systems of stopping using.Occupant restrain system can be automatically, manually, or to reset with the mode that manually combines automatically, for example, if it is unsuccessful to automatically reset, then replace hand reset.
With reference to accompanying drawing, Fig. 1 is to use the transparent view of vehicle of the example embodiment of instruction of the present invention.As shown in the figure, vehicle 100 has the rollover checking system 105 that is connected to occupant restrain system 110.Though vehicle 100 as shown is roadlice, vehicle 100 can be the vehicle of any kind, comprises truck, van, mini-van, SUV (sport utility vehicle), or other vehicles.According to example embodiment of the present invention; Rollover checking system 105 can comprise control circuit 115 (term " control circuit " can comprise control module or controller as used among this paper), roll rate sensor 120, angle of roll detector 125, longitudinal acceleration meter 130, lateral acceleration meter 135, normal acceleration meter 140, Yaw rate sensor 145, sideslip sensor 150, car speed sensor 155, vehicle weight sensor 160a and 160b, one or more lateral acceleration meter 165a and 165b, ride-height sensor 170, tire pressure sensor, and inertial sensor 175.Also other sensors be can use in some embodiments of the invention, for example vehicle window state sensor 180, seatbelt snap close state sensor (not shown), steering handwheel sensor (not shown) comprised, and wheel condition sensor (not shown).The sensor that its signal input is used for rollover prediction/detection and/or occupant restrain system deployment provides data to control circuit 115 directly or indirectly.According to disposing algorithm by control circuit 115 execution with rollover prediction and occupant restrain system before the rollover of various example embodiment.
The layout that it will be understood by those skilled in the art that sensor among Fig. 1 only is used for illustration purpose, and the actual arrangement of such sensor can change in vehicle of the present invention or system.The some of them sensor can be used for producing the signal input of aided algorithm, or calculates the data that can in the various example embodiment of instruction of the present invention, use based on sensor signal.For example; Angle of roll and angle of side slip data can detect and obtain or can calculate based on one or more other sensor signals (as; Calculate through the roll stability control unit, like US Pat 7,130; No. 735 said, and the complete disclosure of this patent combines in this article as a reference).Similarly, various rotor inertia signals and acceleration signal can be through being used for confirming that other calculated signals of its value obtain.
The sensor that uses according to the various example embodiment of instruction of the present invention can comprise subassembly, so that sensor can detect the data from vehicle 100 each several parts.For example, the vehicle weight sensor can comprise a plurality of sensor 160a, 160b, is used for the vehicle weight data of the zones of different of registration of vehicle 100.The sensor that various example embodiment according to the present invention are used can be electrically connected or be wirelessly connected to control circuit 115, any other sensor and/or other vehicle data systems.
In the example embodiment of instruction of the present invention, incoming signal is carried out pretreatment, pretreatment can comprise LPF, noise removing, and drift one or more in eliminating.Can connect with wireless mode or through hardwired and incoming signal is provided to control circuit 115.Can to control circuit 115 incoming signal be provided through special-purpose incoming line and/or through allowing to share between a plurality of controllers in vehicle when suitable the communication bus of signal.
The various example embodiment expections of instruction of the present invention comprise the threshold value in rollover last stage and rollover stage, and this threshold value can be dynamic threshold, static threshold, or both.Threshold value can and can also depend on for example vehicle initial angle signal, speed signal, acceleration signal, tire pressure signal, steering handwheel status signal, angle of roll signal, roll rate signal, yaw rate signal based on specific vehicle, and lateral acceleration signal in one or more.A kind of method and system according to instruction of the present invention can have the motion of rollover possibility or be in the position that the rollover possibility is arranged based on vehicle, rather than uses existing rollover prediction based on energy.There are the motion or the position of rollover possibility for example can comprise: when the track of vehicle contacts change by the physics with another vehicle or object; When the pressure of vehicle tyre reduces fast; When the chaufeur input changes steering rate and steering angle fast; Or when vehicle leaves the road surface and experience higher lateral acceleration and speed.In example embodiment of the present invention; Be used for confirming that the threshold value in various rollover last stages and rollover stage can additionally depend on one or more data-signals; Include but not limited to for example vehicle window status signal, seatbelt status signal, and/or the position of automotive occupant in vehicle.Such information can be used for determining whether, when reaches and how to dispose specific available passenger restraint system.For example, if the occupant does not fasten seatbelt or uses other passive bound devices, then hope during lighter front shock, to dispose the inflatable restraint device.
The occupant restrain system 110 according to instruction of the present invention can also controlled and begin to control circuit 115.Occupant restrain system 110 can comprise various restraint devices.Such device can comprise side curtain airbag 205; As front bladders 215, one or more lateral gasbag 220 of the front bladders 210 of tumble protection side gas curtain system, driver side, occupant side, Webbing retractor can reset; Like taking-up device (not shown), the pyrotechnic snap close preloader (not shown) of senior rollover seatbelt snap close or other types, and/or based on passive safety system (not shown) before the bump of vision/radar.Senior rollover seatbelt latches in US Pat 6,994, describes in detail in No. 375, and the complete combination of the disclosure of this patent in this article as a reference.
The one or more various example embodiment and control circuits 115 that can be used in instruction of the present invention in these restraint devices go for reaching threshold value; Indication gets into according to vehicle rollover last stage of instruction of the present invention and rollover and in the time of the stage or different time, activates these restraint devices.Various other sensors and independently controller also can be used for controlling passenger restraint system in certain embodiments.Control circuit 115 can be disposed restraint device through producing one or more control signals in response to a plurality of rollover detection thresholds.
Fig. 2 illustrates according to the rollover possibility of instruction of the present invention or deterministic four-stage (two rollover last stages and two rollover stages).When shifting to the right in the stage, rollover becomes more definite.
Fig. 3 illustrates to be used to discern or confirm the form according to the various rollover last stages of the present invention and the example embodiment of the signal in rollover stage.As shown in the figure, in this embodiment, the roll rate signal is used for confirming rollover last stage (rollover last stage 1 and rollover last stage 2) and rollover stage (rollover stage 1 and rollover stage 2).Roll rate is the speed that the angle of roll of vehicle changes.Yaw rate signal is used for confirming rollover last stage and the first rollover stage (rollover stage 1).Yaw rate refers to that vehicle centers on the rotation of its vertical axis, and shows with the number of degrees of per second or the radian numerical table of per second usually.Driftage can be described as the motion of object around its vertical axis, and how many Yaw rate sensors has confirmed vehicle off-axis " rotation " usually.The increase of yaw rate for example can be indicated to vehicle and applied power or vehicle at lateral slip.The steering wheel angle rate signal is used for confirming the rollover last stage and the first rollover stage.Steering handwheel angle signal is used for confirming the rollover last stage and the first rollover stage.Steering handwheel angle indication chaufeur is hoped the number of degrees and the direction that vehicle turns to.Because the direction of steering handwheel angle indication chaufeur expection, this angle can be used for confirming in fact whether vehicle go with other sensors inputs on this anticipated orientation (or understeer, or oversteer).Steering wheel angle speed indication chaufeur is so that how soon speed is rotated steering handwheel, or steering handwheel with how soon speed rotate and do not have an input of chaufeur.Steering wheel angle speed can be indicated the chaufeur action of facilitating rollover or other vehicle locations with rollover possibility.
Lateral acceleration signal can be used for confirming rollover last stage and rollover stage.Longitudinal acceleration signal can be used for confirming the rollover last stage.Vertical acceleration signal can be used for confirming the rollover stage.Lateral acceleration refers to the speed that car speed increases on side direction.Longitudinal acceleration refer to car speed advance or reverse direction on the speed that increases.Normal acceleration refers to the speed that car speed increases in vertical direction.Side velocity and lateral acceleration indication vehicle is just in shifted laterally and therefore fully under the control at chaufeur and be in and cause the position that trips rollover (trip over).Longitudinal velocity is relevant with the algorithm of instruction of the present invention with acceleration/accel, because longitudinal momentum can convert lateral momentum into when the vehicle get out of hand.Vehicle acceleration can be indicated for example ditch rollover (ditch over) or slope rollover (ramp over) situation.
For above-mentioned reasons, vehicle velocity signal can be used for confirming second rollover last stage and the rollover stage.Angle of side slip or " angle of slide " signal can be used for confirming second rollover last stage and the rollover stage.Angle of slide be inclination vehicle actual travel direction and its towards the angle between the direction.One or more tire pressure signals can additionally be used for confirming rollover last stage and rollover stage.
One or more tire pressure signals can comprise and right front fire and left front tire and/or the right rear fire tire pressure information relevant with left and right sides tire.Instruction of the present invention can be discerned the fluctuation of tire pressure simply; Or based on carrying out assessment with rollover or near the cooresponding pressure characteristics of the incident of rollover, the vehicle location that its result is used to predict the rollover incident in some embodiments of the invention or the rollover possibility is arranged with other sensor inputs to one or more pressure signals.
According to instruction of the present invention; In various example embodiment; Assessment to pressure signal can comprise respectively with right side tire pressure signal and left side tire pressure signal and tire pressure percent high threshold value and the comparison of tire pressure lower threshold; Or opposite, assessment result is for just (to indicate possible rollover) when the pressure of vehicle one side wheel tire is lower than the tire pressure lower threshold pressure of vehicle opposite side tire surpasses the tire pressure percent high threshold value simultaneously.The situation of such assessment preferably occur in the schedule time window.
Perhaps, can comprise to the assessment of pressure signal and to measure the follow-up left side wheels tire pressure sample and the moving average of a plurality of differences between the right-hand wheel tire pressure sample that assessment result is for just when aviation value reaches predetermined threshold value.Can be additionally or alternatively comprise the rollover of the pressure characteristics that is used in the measurement of writing down in the predetermined time window and the expression of being stored or compare to the assessment of pressure signal near the pressure template of the model of the incident of rollover, if the pressure of measuring with predetermined precision corresponding at least one template then assessment result is just (to indicate possible rollover).The template of storage can obtain through computer modeling, during real-time rollover incident, write down and obtain, and/or obtained by scholarly forecast.
The various example embodiment expection of instruction of the present invention comprises that the signal that uses other types confirms one or more rollover last stages and rollover stage, for example uses initial angle of roll detector, vehicle mass sensor, reaches the rotor inertia detector.It will be understood by those skilled in the art that from each the signal in these sensors and how to be applicable to the prediction vehicle rollover.
According to some example embodiment, in the rollover last stage 1, but resetted taking-up device or other reset attachments of activation motor driven make the backrush of seatbelt ribbon to taking-up device.This allow early to reduce or remove the occupant who wear thick and heavy overcoat off normal (OOP) wait the seatbelt of generation to relax.According to some example embodiment; In the rollover last stage 2, when the rollover incident becomes possible more, but can activate another reset attachment; But like senior rollover seatbelt snap close reset seat chair cushion; But or other reset attachments, lax for example not produce seatbelt again through the waistband portion of guaranteeing seatbelt, further keep or revise the position of occupant in vehicle.
For the rollover stage 1, algorithm is confirmed rollover generation soon and in some example embodiment, begun to activate can not reset attachment.In this first rollover stage, activation (like, pyrotechnic) the seatbelt pre-tightening apparatus that can not reset, and because used bigger power than the taking-up device of previous deployment, this can remove in the seatbelt ribbon additional lax usually.At last, for the rollover stage 2, rollover possibly begin and in some embodiments of the invention, the enclosure device that activation can not reset.These devices are designed for during turning on one's side the occupant are limited in the vehicle, and can comprise for example gas filled device, like curtain type gas bag, the protection side of tumbling gas curtain system, front bladders and lateral gasbag.The occupant is limited in the vehicle, and additionally remains on and make the actv. position of gas filled device can reduce chance and injury seriousness that the bump that comprises rollover produces injury.
Fig. 4 illustrate be used for according to before the rollover of the various example embodiment of instruction of the present invention with the scheme drawing of rollover prediction with the algorithm of occupant restrain system deployment.As shown in the figure; Like roll rate, yaw rate, steering wheel angle speed, steering handwheel angle, longitudinal acceleration, lateral acceleration, normal acceleration, the speed of a motor vehicle, angle of side slip, and incoming signal such as tire pressure can be used for predicting the vehicle rollover possibility in rollover last stage and rollover stage.
After prediction vehicle rollover possibility, use this possibility and specific threshold predetermined or that dynamically confirm to compare.Instruction of the present invention expection comprises that target is early to predict the rollover incident or the various threshold basis of possibility of the vehicle location of the possibility of turning on one's side are arranged based on vehicle location and momentum.The basis of such threshold value can be depended on type and various types of rollover of vehicle and change.For example, tripping rollover of rollover and slope or ditch rollover compares and has vehicle feature (at least for the rollover last stage 1 and 2) before the different rollovers.For example in tripping rollover, the side velocity of vehicle and lateral acceleration are for determining whether to reach the threshold value outbalance.Yet, in ditch rollover or slope rollover, normal acceleration, degree of dip, and angle of roll is born more importantly role during threshold value before whether assessment reaches rollover at least.
As shown in Figure 4, rollover last stage 1 threshold value is an activation/disable threshold, but but this means the activation reset attachment and when definite rollover will not take place, stop using reset attachment.If reach rollover last stage 1 threshold value, then activate the pre-tightening apparatus that to reset.If after activating the pre-tightening apparatus that can reset, cause the one or more values that reach threshold value to be lower than rollover last stage 1 threshold value (showing that the rollover incident does not take place in prediction), then make the pre-tightening apparatus that can reset stop using and reset.Rollover last stages 2 threshold value also is an activation/disable threshold.If reach rollover last stages 2 threshold value, but then activate additional reset attachment.But if after activating additional reset attachment; Cause the one or more values that reach threshold value to be lower than rollover last stages 2 threshold value (showing no longer deterministic forecast generation rollover incident), but then make reset seat seat belt snap close blocking device stop using and reset with same degree.
Affirmation to calculating occurs as insurance (safing) characteristic in the embodiment of Fig. 4, and such affirmation is optional step but in Vehicle security system, uses usually.
In the example implementation of the algorithm of instruction of the present invention, for (the rollover incident that the trips that=vehicle that 70mph) goes takes place is confirmed before the rollover and the rollover threshold value in the following manner with about 112.65 kilometers/hour.The type that trips rollover that is used for the example implementation statistics is the friction force accumulation, is similar to the soil and trips rollover (soil trip over).Fig. 5 illustrates confirming of rollover last stage 1, and in the embodiment shown, this can confirm through the side velocity and the lateral acceleration of vehicle separately.Shown in example embodiment in, rollover is confirmed at 0.1 second the last stage 1 to about 0.2 second time range.As shown in the figure, the rapid increase of side velocity and lateral acceleration surpasses rollover last stage 1 threshold value, and the activation that for example causes the automatic seat Webbing retractor that can reset is to keep occupant position and to prepare for possible rollover incident.Instruction of the present invention can for example reach 9.8m/s on smooth ground
2Confirm to have reached the rollover last stage 1 during the lateral acceleration of (=1G).Instruction of the present invention expection comprises that causing other sensor readings that reach rollover last stage 1 threshold value, side velocity and lateral acceleration is to be enough to indicate the mono-morning vehicle behavior of rollover possibility with the activation of the restraint device that guarantees to reset.
For exemplary 112.65 kilometers/hour (=70mph) soil trips rollover and realizes; Fig. 6 A and 6B illustrate confirming of rollover last stage 2; This can also possibly pass through vertical speed through the side velocity of vehicle, and the change of yaw angle (not shown), yaw rate and roll rate is predicted.The whole indication of sensor reading among Fig. 6 A and 6B vehicle moves to sideway movement from forward direction and changes its direction.In fact, the change of yaw angle is appearring in the indication of the reading shown in the rollover last stage 2.Shown in example embodiment in, rollover is confirmed at about 0.2 second the last stage 2 to about 0.4 second time range.In this rollover certainty horizontal period; Trip that rollover has taken place or be about to and take place; Also further prepare to keep the position of occupant in vehicle but can dispose additional reset attachment, but the occupant is remained on the reset seat chair cushion on its seat as disposing for possible rollover incident.
For this example implementation, Fig. 7 A and 7B illustrate confirming of rollover stage 1, and this can pass through vehicle side velocity, yaw rate and roll rate, and yaw angle and angle of roll (not shown) are predicted.Shown in example embodiment in, the rollover stage 1 is confirmed at about 0.4 second to about 0.55 second time range.Lateral acceleration and normal acceleration increase and yaw rate are higher.Roll rate also increases.Under this sight, turn on one's side current generation soon and angle of roll begin to change, and yaw angle also begins to change, and the longitudinal movement of vehicle continues to convert into sideway movement simultaneously.Reaching the rollover stage 1 during threshold value, the activation restraint device that can not reset, as the pyrotechnic machinery preloader of snap close is installed, because the possibility of rollover incident is enough greatly.Compare with the preloader that can reset, the pyrotechnic machinery preloader that snap close is installed can apply bigger power, thereby eliminates additional relaxing to keep occupant position better and further to prepare for imminent rollover incident in the seatbelt.
Shown in the sight, cause the resistance that trips rollover to stumble and can occur in during rollover last stage 2 or rollover stage 1.
For this example implementation, Fig. 8 illustrates the rollover stage of confirming about 0.55 second 2, and this can be through the angle of roll (not shown) prediction that increases.In the embodiment shown, driftage sharply increases and roll rate reduces.Be about to take place or taking place in this stage rollover, thereby can dispose one or more restraint devices that can not reset, like air bag according to the dynamic characteristics (dynamics) of rollover.For example, automotive occupant is not got rid of the forward momentum to Windshield, then in tripping rollover, can not dispose front bladders if do not exist.Under these circumstances, the deployment of inflatable restraint device can be limited to lateral gasbag, and/or the protection side gas curtain system/gas curtain of tumbling.
For example should be understood that in the difference action that causes rollover, as trip rollover, slope rollover, and in the ditch rollover, different input signals can be used for the rollover last stage and the rollover stage of definite instruction of the present invention.Cause the difference action of rollover possibly need different constrained system deployment phases and dispose speed.For example, compare with the slope rollover, tripping rollover needs to dispose faster, and only need dispose passive security attaching means and side impact gas filled device.
It should be noted that be not all functions that detail among this paper and characteristic all be completely to realize that effectively the present invention institute is essential.Said element of neither one (or a plurality of) or characteristic implicitly, explicitly or be crucial or essential to operation of the present invention in essence, only if offer some clarification in this article.For example, the present invention's expection when prediction rollover possibility comprises any amount of rollover last stage and rollover stage.In fact, need not turn on one's side the last stage and the rollover stage quantity identical.For example, the present invention's expection comprises three rollover last stages and two rollover stages.In addition, the invention is not restricted in the rollover last stage, dispose the passenger restraint system and in the rollover stage, dispose the passenger restraint system that to reset of to reset.
Be the purpose of this specification sheets and appending claims, only if offer some clarification on, the numeral of all expression quantity, percentum or ratio and other numerical value that in specification sheets and claims, use all is interpreted as being modified by attribute " pact " in all cases.Therefore, except as otherwise noted, the numerical parameter that uses in the text of specification sheets and claims is approximate value, and can depend on the present invention to attempt to obtain desired characteristic and change.Each numerical parameter should be interpreted as the significance with report at least and use general rounding method, does not limit at all and does not also attempt to limit the application of doctrine of equivalents to the scope of claim.
Though limiting the number range and the parameter of broad range of the present invention is approximate value, the numerical value that uses in the concrete example is to provide with accurate way as far as possible.Yet any numerical value comprises one in essence and fixes on the error that certainly leads to standard deviation in its corresponding experimental measurement.Moreover, any and all subranges that all scopes disclosed herein are understood to include wherein to be comprised.For example, the scope of " less than 10 " comprises any and all subranges that (comprise minimum value and maxim) between minimum value 0 and the maxim 10, that is, have more than or equal to zero minimum value with smaller or equal to peaked any and all subranges of 10, as 1 to 5.
It should be noted that as used in this specification sheets and the appended claims " " of singulative, " one " and " being somebody's turn to do " comprise a plurality of indication things, only if clear and definite be limited to an indication things with free burial ground for the destitute undoubtedly.Therefore, for example, the citation of " restraint device " is comprised two or more different restraint devices.As used among this paper, word " comprises " and phraseological variant to be interpreted as be nonrestrictive so that the project of mentioning in tabulation is not got rid of alternative or is added other similar items in the Listed Items to.
It will be apparent to those skilled in the art that and to make various modifications and change and do not depart from the scope of its instruction method of the present disclosure.Through considering the enforcement of specification sheets and instruction disclosed herein, other embodiment of the present disclosure also are conspicuous to those skilled in the art.Should be understood that it is exemplary that specification sheets and example should be regarded as.
Claims (7)
1. vehicle rollover prediction and restraint device deployment system comprise:
Produce a plurality of vehicle data sensors of a plurality of data-signals; And
Receive said data-signal and be configured to dispose can reset restraint device with can not reset the controller of restraint device,
Said controller is configured to surpass first threshold at one or more data-signals; The indication vehicle is in the position that the rollover possibility is arranged or when the motion of rollover possibility is arranged, activates the restraint device that can reset at least, and at least one restraint device that can reset of when one or more data-signals are lower than first threshold, stopping using; , one or more data-signals activate at least one additional resetted restraint device when surpassing second threshold value, and at least one additional resetted restraint device of when one or more data-signals are lower than second threshold value, stopping using.
2. the system of claim 1 is characterized in that, the data-signal of comparing with first threshold comprises one or more in side velocity and the lateral acceleration.
3. the system of claim 1 is characterized in that, comprises one or more in side velocity, vertical speed, yaw angle, yaw rate and the roll rate with the data-signal of second threshold.
4. the system of claim 1 is characterized in that, said controller is configured to when one or more data-signals surpass the 3rd threshold value, activate at least one restraint device that can not reset.
5. system as claimed in claim 4 is characterized in that, comprises one or more in side velocity, yaw rate, roll rate, yaw angle and the angle of roll with the data-signal of the 3rd threshold.
6. the system of claim 1 is characterized in that, said controller is configured to when one or more data-signals surpass the 4th threshold value, activate at least one additional restraint device that can not reset.
7. system as claimed in claim 6 is characterized in that, comprises angle of roll with the data-signal of the 4th threshold.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/907,298 US8086376B2 (en) | 2007-10-10 | 2007-10-10 | Vehicle rollover prediction with occupant restraint system activation |
| US11/907,298 | 2007-10-10 |
Publications (2)
| Publication Number | Publication Date |
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| CN101407200A CN101407200A (en) | 2009-04-15 |
| CN101407200B true CN101407200B (en) | 2012-10-03 |
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| CN2008101696950A Expired - Fee Related CN101407200B (en) | 2007-10-10 | 2008-10-09 | Vehicle rollover prediction with occupant restraint system activation |
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| US (1) | US8086376B2 (en) |
| EP (1) | EP2058180B1 (en) |
| CN (1) | CN101407200B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2058180A3 (en) | 2013-07-03 |
| EP2058180B1 (en) | 2016-03-09 |
| CN101407200A (en) | 2009-04-15 |
| US20090099735A1 (en) | 2009-04-16 |
| US8086376B2 (en) | 2011-12-27 |
| EP2058180A2 (en) | 2009-05-13 |
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